fix(layer): propagate LAY* command changes to panel + dropdown (#39)

LAYOFF / LAYFRZ / LAYLCK / LAYON / LAYTHW / LAYULK / LAYISO /
LAYUNISO mutated the document's layer table (\`turn_off\` /
\`freeze\` / \`lock\` / …) and then called \`sync_ribbon_layers\`,
which feeds the ribbon dropdown from \`self.tabs[i].layers.layers\`
— the \`LayerPanel\` cache. That cache was never refreshed from
the document for these commands, so the dropdown stayed wrong and
the Layers Properties Manager kept showing the old visibility /
lock / freeze icons.

Add \`OpenCADStudio::refresh_layer_panel\` that runs
\`LayerPanel::sync_with_viewports\` from the live document before
calling \`sync_ribbon_layers\`. Replace every direct
\`sync_ribbon_layers\` in \`commands.rs\` (all of them sit inside
LAY* arms) with the new helper.

Closes #39

src/app/commands.rs

@@ -131,7 +131,7 @@ impl OpenCADStudio {
                         }
                     }
                     self.tabs[i].dirty = true;
-                    self.sync_ribbon_layers();
+                    self.refresh_layer_panel();
                     self.command_line.push_info("Layer(s) turned off.");
                 }
             }
@@ -165,7 +165,7 @@ impl OpenCADStudio {
                         }
                     }
                     self.tabs[i].dirty = true;
-                    self.sync_ribbon_layers();
+                    self.refresh_layer_panel();
                     self.command_line.push_info("Layer(s) frozen.");
                 }
             }
@@ -196,7 +196,7 @@ impl OpenCADStudio {
                         }
                     }
                     self.tabs[i].dirty = true;
-                    self.sync_ribbon_layers();
+                    self.refresh_layer_panel();
                     self.command_line.push_info("Layer(s) locked.");
                 }
             }
@@ -215,7 +215,7 @@ impl OpenCADStudio {
                     self.tabs[i].layers.current_layer = layer.clone();
                     self.command_line
                         .push_info(&format!("Current layer set to \"{layer}\"."));
-                    self.sync_ribbon_layers();
+                    self.refresh_layer_panel();
                 }
             }
 
@@ -234,7 +234,7 @@ impl OpenCADStudio {
                     }
                 }
                 self.tabs[i].dirty = true;
-                self.sync_ribbon_layers();
+                self.refresh_layer_panel();
                 self.command_line.push_info("All layers turned on.");
             }
 
@@ -253,7 +253,7 @@ impl OpenCADStudio {
                     }
                 }
                 self.tabs[i].dirty = true;
-                self.sync_ribbon_layers();
+                self.refresh_layer_panel();
                 self.command_line.push_info("All layers thawed.");
             }
 
@@ -283,7 +283,7 @@ impl OpenCADStudio {
                         }
                     }
                     self.tabs[i].dirty = true;
-                    self.sync_ribbon_layers();
+                    self.refresh_layer_panel();
                     self.command_line.push_info("Layer(s) unlocked.");
                 }
             }
@@ -316,7 +316,7 @@ impl OpenCADStudio {
                         }
                     }
                     self.tabs[i].dirty = true;
-                    self.sync_ribbon_layers();
+                    self.refresh_layer_panel();
                     self.command_line
                         .push_info(&format!("LAYISO: isolated {} layer(s).", sel_layers.len()));
                 }
@@ -338,7 +338,7 @@ impl OpenCADStudio {
                     }
                 }
                 self.tabs[i].dirty = true;
-                self.sync_ribbon_layers();
+                self.refresh_layer_panel();
                 self.command_line
                     .push_info("LAYUNISO: all layers restored.");
             }

src/app/layers.rs

@@ -2,6 +2,21 @@ use super::OpenCADStudio;
 use crate::ui;
 
 impl OpenCADStudio {
+    /// Reload the `LayerPanel` cache from the document and push the
+    /// fresh state through to the ribbon dropdown + every other
+    /// layer-aware UI mirror. Use this whenever a command mutates the
+    /// document's layer table directly (LAYOFF / LAYFRZ / LAYLCK …) so
+    /// the panel + dropdown reflect the change. See #39.
+    pub(super) fn refresh_layer_panel(&mut self) {
+        let i = self.active_tab;
+        let doc_layers = self.tabs[i].scene.document.layers.clone();
+        let vp_info = self.tabs[i].scene.viewport_list();
+        self.tabs[i]
+            .layers
+            .sync_with_viewports(&doc_layers, vp_info);
+        self.sync_ribbon_layers();
+    }
+
     pub(super) fn sync_ribbon_layers(&mut self) {
         let i = self.active_tab;
         let active = self.tabs[i].active_layer.clone();